Since we started our whole "Intervention" thing, the number and severity of global conflicts has gone down. Its not pretty, but it works.
NOT military intervention, though. We should still be heavily involved in world affairs through humanitarian aid, diplomacy, and building infrastructure and stable democracies. If goals for a more prosperous/safe world absolutely require military, then fine, we shouldn't be afraid to use our giant armed forces, but this shouldn't be the go-to- form of intervention.
Sometimes there are things worth fighting for.
Ok, depends we need to intervene in some cases. Its our responsibility as a super power. That being said, I don't think we need to send troops to every place where injustice happens.
It's the calm before the storm.
We are not international policemen. Unless it's absolutely necessary, we should stay out of foreign conflicts.
Non interventionism, not isolationism. We should trade and engage in diplomacy, but not fight wars that aren't ours to fight.
We should stop wasting money on our bases around the world.
Assuming interventionism implies military intervention, I choose isolationist. However, I think diplomatic entanglements are just fine.
Saves money, and reduces anti-American sentiments. We should rely on the UN and regional actors to resolved international conflicts.